Focusing knob for binoculars



FIG. 1 is a perspective view of a focusing knob for binoculars incorporating my new design environmental structure being indicated by broken lines for illustrative purposes only;

FIG. 2 is an enlarged perspective view of the focusing knob;

FIG. 3 is a top plan view of the focusing knob;

FIG. 4 is a bottom plan view of the focusing knob;

FIG. 5 is a side elevational view of the focusing knob; and

FIG. 6 is a rear elevational view of the focusing knob. 

The ornamental design for a focusing knob for binoculars, as shown and described. 